Machine for manufacturing boxes



March 14, 1933. A, JOHNSON 1,901,750

MACHINE FOR MANUFACTURING BOXES Filed July 11, 1931 2 Sheets-Sheet l 5-H Zdihnsm E): M/MMZLL March 14, 1933. B JOHNSON 1,901,750

MACHINE FOR MANUFACTURING BOXES Filed July 11, 1951 2 Sheets-Sheet 2 /N verrfa It Patented Mar. 14, 1933 UNITED srATEs PATENT OFFICE BROR ANDERS EMIIL JOHNSON, OF ALSTEN, SWEDEN, ASSIGNOR T AKTIEBOLAGET GER-H. AREHNS MEKANISKA VERKSTAD, OF STOGKl-IOLM, SWEDEN, A CORPORA- TION OF SWEDEN MACHINE FOR MANUFACTURING BOXES Application filed July 11, 1931, Serial No. 550,160, and in Germany April 22, 1930.

This invention refers to such machines for manufacturing boxes, especially the outer casings of match boxes and similar articles, as are provided with a mandrel round which is wound a blank, generally a. veneer strip provided with score lines, where the strip is to be folded, and with a roller (smoothing roller), which forces the veneer against the mandrel, and further with a roller, which together with a counter roller fixes a pasted paper strip or the like to the veneer in order to be then wound round the mandrel together with the veneer for keeping the veneer together. Machines of the said type also generally are provided with a knife, which together with the said counter roller cuts oil the paper. Hitherto the counter roller was stationarily journalled, which involved the risk of the veneer blank being broken at the end of the winding operation.

I This invention relates to an arrangement of the counter roller and the roller fixing the paper to the veneer, through which the said drawback is removed. The arrangement consists therein that the said rollers at the end of the winding operation are moved to such a position with relation to the mandrel that the veneer is not subjected to any bending actuation tending to break the veneer. In order that the paper strip may be cut or? along a straight line, the counter roller, before the cutting is effected, is brought to a position more favorable for the purpose.

Figures 1 to inclusives of the accompanying drawings show diagrammatically a winding mechanism arranged in accordancewit-h this invention; the said figures illustrate the members of the winding mechanism in difierent positions they occupy during the winding operation.

Figure 6 illustrates diagrammatically the reason why the veneer strip is broken in machines as hitherto constructed.

Figures 7 and 8 show in a side view and a plan view respectively the winding mechanism, the cam and groove discs controlling the rollers of the same and the severing device for the paper, and

Figure 9 shows in a plan view the mandrel and the driving mechanism of the same and also means for pushing the finished casing from the mandrel.

1 is the mandrel, round which the veneer together with paper strip is wound. The said mandrel, which is rotated in the direction indicated by the arrow, is provided with a tongue or jamming member 2 for fixing the veneer strip to the mandrel. Veneers 3 are fed from a magazine 4, so that the front end of each veneer is pushed into the space between the mandrel and the tongue and thus fixed to the mandrel and in this manner caused to partake in the rotary motion of the mandrel and thereby wound round the same, Figures 2 and i.

The veneer strip is forced against the sides of the mandrel 1 by a roller 5 or the so-called smoothing roller. As the mandrel has been rotated to the position shown in Figure 3, a paper strip 6 coated with paste and drawn for instance from a reel (not shown) is forced against the veneer by a roller 7, the lift roller, and then accompanies the veneer round the mandrel 1.

While the paper is fixed to the veneer the latter is supported by a roller 8 provided in its surface with grooves. After two revolutions of the mandrel 1 the winding operation is finished and the casing pushed from the mandrel by tongues moved therealong. The quantity of paper necessary for the casing is severed from the strip by a knife 9 provided with teeth and moved upwards and downwards, said knife co-operating with the said grooved roller 8, Figure 5.

The rollers belonging to the winding mechanism, the knife and the tongues removing the casing from the mandrel, are controlled by cam and groove disks in the manner stated below. 7

In order to prevent the veneer from being broken at the last score a in the same, especially when the veneer is of a brittle material, rollers 7 and 8 according to this invention are moved upwards after the paper has been fixed to the veneer, Figures 3 and 4. The manner in which a breakage of the veneer at the score-line a may take place in machines hitherto used is illustrated in Figure 6. While the smoothing roller 5 forces the veneer against the broad side of the mandrel, the roller 8 keeps the end of the veneer forced downwards, so that an angle is made at the score-line a, which results in the veneer being broken. If, on the other hand, the rollers 7 and 8 are moved upward to the position shown in Figure 4, in which they are located in, or substantially in, the extension of the side of the mandrel, no such bending of the veneer at the scoreline takes place as that just mentioned.

After the winding of the'veneer has been finished, the grooved roller 8 is lowered and brought into a position favorable for the severing of the paper, Figure 5. The paper strip 6 is here practically straight below the roller 8, so that the knife 9 effects a straight cut, which would not be the case, if the severing be effected, while the roller 8 occupies such. a high position as shown in Figure 1 in which case the paper strip would curve transversely while the knife, moved upwards, acts upon the same, the out being thereby not straight but having one or more curvatures. In addition the knife during its upward movement would rub against the strip and, it may be, spoil it.

The mandrel 1, provided on a shaft 10 journalled in the frame of the machine, Figure 9, is rotated by the driying shaft 11 of the machine through toothed gearing 12, 13. The tongues mentioned above and pushing the casing from the mandrel, are designated by 14 in Figure 9. These tongues 14 are fixed to a ring 15, slidably mounted on the shaft 10 and rotates therewith. Said ring 10 is provided in its peripheral surface with a groove engaged by a cross piece 16, fixed to two rods 17 sliding longitudinally in the frame of the machine and provided with a second cross piece 18. The latter carries a roller engaging a groove disk 19 on the shaft 11, the necessary reciprocating movement being thereby imparted to the tongues 14.

The veneers provided in the magazine 4 are fed one by one from the bottom of the magazine and to the winding mechanism by a slide 20, Figures 7 and 8, moved forwards and backwards by a link 21, an arm 23 pivoted at 22 to the frame of the machine and an arm 24 acted upon by a cam disk 25 fixed on the driving shaft 11 of the machine. A spring 26 returns the slide 20 after the feeding has been performed. The smoothing roller 5 is carried by a fork-shaped arm 27 extending from a shaft 28, which is provided with a second arm 29 co-operating with a cam disk 30 on the shaft 11. A spring 31 causes the smoothing roller 5 to bear against the sides of the mandrel 1 and the said cam disk 30 moves the smoothing roller from the mandrel, as the finished casing is to be pushed from the mandrel and a new veneer is to be inserted in the same. Lift roller 7 is carried by a forkshaped arm 32 on a shaft 33 and is moved upwards by a spring 34, acting upon an arm on the shaft 33. Roller 7 is moved downwards by a cam disk 36 acting upon an arm 37 on the shaft and the roller S is carried by an arm 38 on a shaft 39, provided with a second-arm 40, forced against a cam disk 41 by a spring 42. The roller 8 is held in the different positions stated above by the cam disk 41. The knife 9 is carried by an arm 4-3 on a shaft 44, which is provided with an arm 45, acted upon by a cam disk 46, and such knife is moved downwards by the cam disk 46 and upwards by a spring 47. The cam disks mentioned above are shown in Figure 7 only by dotted circles, and neither in Figure 8 is the shape of the same shown. The shape may easily be contrived from the movements to be performed by the rollers and the knife.

The details of the winding mechanism may be obviously be modified in various ways without exceeding the limits of the invention.

I claim:

1. In a machine for 'manufacturing boxes and similar articles from veneer and the like, the combination of a mandrel adapted to have the veneer wound thereon, a roller for pressing the veneer against the mandrel, a second roller and a counter roller coacting to fix a pasted paper strip to the veneer, the strip being wound around the box for keeping the same together, and means for shifting the position of the second mentioned and counter rollers with relation to the mandrel at the end of the winding of the veneer to guide and prevent reverse bending of the latter.

2. A machine as claimed in claim 1, characterized by the provision of a cutter cooperating with the counter roller for severing the paper strip, the movement of the counter roller being adjusted to cause severance of the paper strip at the counter roller while said strip extends in substantially a straight line from the mandrel.

8. In a machine for manufacturing boxes and similar articles from veneer and the like, the combination of a mandrel adapted to have the veneer wound thereon, a roller for pressing the veneer against the mandrel, a second roller and a counter roller coacting to guide the veneer as it is wound upon the mandrel, and means for shifting the position of the second mentioned and counter rollers witlrrelation to the mandrel at the end of the winding of the veneer to guide and prevent reverse bending of the latter.

In testimony whereof I have hereunto affixed my signature.

BROR ANDERS EMIL JOHNSON. 

